scholarly journals Spine–hip relations in patients with hip osteoarthritis

2018 ◽  
Vol 3 (2) ◽  
pp. 39-44 ◽  
Author(s):  
Charles Rivière ◽  
Stefan Lazic ◽  
Louis Dagneaux ◽  
Catherine Van Der Straeten ◽  
Justin Cobb ◽  
...  
Keyword(s):  
Hip Replacement ◽  
Surgical Planning ◽  
Imaging System ◽  
Hip Osteoarthritis ◽  
Acetabular Cup ◽  
Total Hip ◽  
Definition Of ◽  
The Individual ◽  
Cup Design ◽  
Cup Positioning

Patients with hip osteoarthritis often have an abnormal spine-hip relation (SHR), meaning the presence of a clinically deleterious spine-hip and/or hip-spine syndrome. Definition of the individual SHR is ideally done using the EOS® imaging system or, if not available, with conventional lumbopelvic lateral radiographs. By pre-operatively screening patients with abnormal SHR, it is possible to refine total hip replacement (THR) surgical planning, which may improve outcomes. An important component of the concept of kinematically aligned total hip arthroplasty (KA THA) consists of defining the optimal acetabular cup design and orientation based on the assessment of an individual’s SHR, and use of the transverse acetabular ligament to adjust the cup positioning. The Bordeaux classification might advance the understanding of SHR and hopefully help improve THR outcomes. Cite this article: EFORT Open Rev 2018;3:39-44. DOI: 10.1302/2058-5241.3.170020

Accuracy and reproducibility of visual estimation of the acetabular cup positioning in total hip arthroplasty on plain radiographs by orthopaedic surgeons

2021 ◽  
pp. 175045892110260
Author(s):  
Charlotte MB Somerville ◽  
James Arthur Geddes ◽  
Mehdi Tofighi ◽  
Krishna Boddu
Keyword(s):  
Hip Replacement ◽  
Outcome Measurement ◽  
Secondary Outcome ◽  
Visual Estimation ◽  
Acetabular Cup ◽  
Orthopaedic Surgeons ◽  
Total Hip ◽  
The Difference ◽  
Cup Positioning ◽  
Cup Position

Objectives To examine whether trauma and orthopaedic surgeons could visually assess the anteversion and inclination of a total hip replacement acetabular component from standard anteroposterior radiograph and anteversion on a standard lateral radiograph with accuracy or reproducibility. Main outcome measurement: The main outcome was accuracy of visual estimations of angles. The secondary outcome was whether these estimations were reproducible though intra-observer variability. Results Mean angles of anteversion on the anteroposterior, inclination on the anteroposterior and anteversion on the lateral on formal measurements were 15.2°, 45.4° and 19.9°; and the visual estimates were 17.5°, 45.9° and 18.2°, respectively. When comparing the visual estimates of surgeons and formal measurements, the results ranged from very poor to very good. Intra-observer reproducibility was moderate for all angles. The difference between the consultants and speciality registrars was not significant. Conclusion This study illustrated that not all orthopaedic surgeons were able to visually estimate angles well. Although some of our participants were very accurate, there were some who statistically were very poor. This level of inaccuracy can lead to inconsistency and we strongly suggested specialist software is used to assess acetabular cup position on postoperative plane radiographs rather than relying on ‘visual estimations’.

scholarly journals Total Hip Replacement: Results of a Postal Survey of Current Practice on the Cement Fixation of the Acetabular Cup in the UK

2004 ◽  
Vol 14 (3) ◽  
pp. 155-162
Author(s):  
R. Mootanah ◽  
P. Ingle ◽  
K. Cheah ◽  
J. K. Dowell ◽  
J. C. Shelton
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Current Practice ◽  
Postal Survey ◽  
Acetabular Cup ◽  
Total Hip ◽  
The Uk

scholarly journals Acetabular Cup Design Influences Deformational Response in Total Hip Arthroplasty

2012 ◽  
Vol 471 (2) ◽  
pp. 403-409 ◽  
Author(s):  
John B. Meding ◽  
Scott R. Small ◽  
Mary E. Jones ◽  
Michael E. Berend ◽  
Merrill A. Ritter
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Acetabular Cup ◽  
Total Hip ◽  
Cup Design

Acoustic Vibration and Mechanical In Vivo Analysis of the Hip Joint After a Total Hip Arthroplasty

2007 ◽  
Author(s):  
D. A. Glaser ◽  
R. D. Komistek ◽  
H. E. Cates ◽  
M. Mahfouz
Keyword(s):  
Femoral Head ◽  
Total Hip Replacement ◽  
Hip Joint ◽  
Hip Replacement ◽  
Acoustic Vibration ◽  
Valuable Insight ◽  
Acetabular Cup ◽  
Total Hip ◽  
Resonance Frequencies

The major complications following total hip replacement (THA) are implant loosening, dislocation, instability, fracture and infection. It is hypothesized that vibration, in the range of the resonance frequencies, may cause pain, bone degeneration and fracture. A further understanding of the physical response resulting from impact during femoral head sliding may lead to valuable insight pertaining to THA failure. Therefore, the first objective of this present study was to determine if frequencies propagating through the hip joint near resonant frequencies may lead to wear or loosening of the components. Recently, studies found that femoral head sliding, often referred to as hip separation, between the acetabulum cup and the femoral head does occur, which may also play a role in complications observed with THA today, but a the effects of hip separation and the causes of its occurrence has not been studied as jet. Therefore, the second objective of this study was to determine if a sound sensor, externally attached, could be used to correlate impact loading sounds from femoral head sliding in the acetabular cup. Additional objective of this study was to develop a mathematical model that better simulates the in vivo loading conditions of total hip replacement patients using in vivo fluoroscopic and ground reaction data as input.

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